Keskin, Ercument, Abdullah Erdogan, and Ibrahim Karabulut. 2021. “Efficacy of Semirigid Ureterorenoscopy With the Use of Ureteral Acsess Sheath in the Treatment of Impacted Ureteral Stones: A Prospective Randomized Study ”. Annals of Medical Research 27 (12): 3148-52. http://www.annalsmedres.org/index.php/aomr/article/view/3611.